Rare! 3 1/4" Shell Plummet with Spiro Mound written in old ink on the side.

Rare! 3 1/4" Shell Plummet with Spiro Mound written in old ink on the side. Came in an old bank envelope marked Sprio Mound $5.00. Ex. William Moreno Trenton NJ. Ex. Len Weidner Collection.